<!doctype html>
<html lang="en">
<head>
    <title>Code coverage report for app/common.js</title>
    <meta charset="utf-8" />
    <link rel="stylesheet" href="../prettify.css" />
    <link rel="stylesheet" href="../base.css" />
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <style type='text/css'>
        .coverage-summary .sorter {
            background-image: url(../sort-arrow-sprite.png);
        }
    </style>
</head>
<body>
<div class='wrapper'>
  <div class='pad1'>
    <h1>
      <a href="../index.html">All files</a> / <a href="index.html">app</a> common.js
    </h1>
    <div class='clearfix'>
      <div class='fl pad1y space-right2'>
        <span class="strong">100% </span>
        <span class="quiet">Statements</span>
        <span class='fraction'>111/111</span>
      </div>
      <div class='fl pad1y space-right2'>
        <span class="strong">100% </span>
        <span class="quiet">Branches</span>
        <span class='fraction'>72/72</span>
      </div>
      <div class='fl pad1y space-right2'>
        <span class="strong">100% </span>
        <span class="quiet">Functions</span>
        <span class='fraction'>4/4</span>
      </div>
      <div class='fl pad1y space-right2'>
        <span class="strong">100% </span>
        <span class="quiet">Lines</span>
        <span class='fraction'>110/110</span>
      </div>
    </div>
  </div>
  <div class='status-line high'></div>
<pre><table class="coverage">
<tr><td class="line-count quiet">1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287</td><td class="line-coverage quiet"><span class="cline-any cline-yes">1x</span>
<span class="cline-any cline-yes">1x</span>
<span class="cline-any cline-yes">1x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">1x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">99x</span>
<span class="cline-any cline-yes">99x</span>
<span class="cline-any cline-yes">98x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">99x</span>
<span class="cline-any cline-yes">99x</span>
<span class="cline-any cline-yes">99x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">99x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">1x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">4x</span>
<span class="cline-any cline-yes">4x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">5x</span>
<span class="cline-any cline-yes">5x</span>
<span class="cline-any cline-yes">5x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">89x</span>
<span class="cline-any cline-yes">89x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">89x</span>
<span class="cline-any cline-yes">82x</span>
<span class="cline-any cline-yes">82x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">7x</span>
<span class="cline-any cline-yes">7x</span>
<span class="cline-any cline-yes">2x</span>
<span class="cline-any cline-yes">2x</span>
<span class="cline-any cline-yes">2x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">5x</span>
<span class="cline-any cline-yes">5x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">99x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">44x</span>
<span class="cline-any cline-yes">44x</span>
<span class="cline-any cline-yes">44x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">42x</span>
<span class="cline-any cline-yes">42x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">42x</span>
<span class="cline-any cline-yes">1x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">41x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">39x</span>
<span class="cline-any cline-yes">80x</span>
<span class="cline-any cline-yes">1x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">39x</span>
<span class="cline-any cline-yes">35x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">39x</span>
<span class="cline-any cline-yes">1x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">38x</span>
<span class="cline-any cline-yes">3x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">38x</span>
<span class="cline-any cline-yes">1x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">37x</span>
<span class="cline-any cline-yes">2x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">37x</span>
<span class="cline-any cline-yes">1x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">36x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">36x</span>
<span class="cline-any cline-yes">32x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">4x</span>
<span class="cline-any cline-yes">2x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">4x</span>
<span class="cline-any cline-yes">1x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">3x</span>
<span class="cline-any cline-yes">2x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">3x</span>
<span class="cline-any cline-yes">2x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">1x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">2x</span>
<span class="cline-any cline-yes">1x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">1x</span>
<span class="cline-any cline-yes">1x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">2x</span>
<span class="cline-any cline-yes">1x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">1x</span>
<span class="cline-any cline-yes">1x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">47x</span>
<span class="cline-any cline-yes">47x</span>
<span class="cline-any cline-yes">3x</span>
<span class="cline-any cline-yes">3x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">44x</span>
<span class="cline-any cline-yes">2609x</span>
<span class="cline-any cline-yes">1x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">43x</span>
<span class="cline-any cline-yes">43x</span>
<span class="cline-any cline-yes">1x</span>
<span class="cline-any cline-yes">1x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">42x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">1202x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">8x</span>
<span class="cline-any cline-yes">8x</span>
<span class="cline-any cline-yes">2x</span>
<span class="cline-any cline-yes">2x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">6x</span>
<span class="cline-any cline-yes">6x</span>
<span class="cline-any cline-yes">5x</span>
<span class="cline-any cline-yes">4x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">80x</span>
<span class="cline-any cline-yes">1x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">79x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">1471x</span>
<span class="cline-any cline-yes">1471x</span>
<span class="cline-any cline-yes">50x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">1421x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">21x</span>
<span class="cline-any cline-yes">19x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">2x</span>
<span class="cline-any cline-yes">2x</span>
<span class="cline-any cline-yes">2x</span>
<span class="cline-any cline-yes">2x</span>
<span class="cline-any cline-yes">2x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-yes">1206x</span>
<span class="cline-any cline-yes">49x</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span>
<span class="cline-any cline-neutral">&nbsp;</span></td><td class="text"><pre class="prettyprint lang-js">const co = require('co');
const lodash = require('lodash');
const moment = require('moment');
&nbsp;
module.exports = {
&nbsp;
    /**
     * get module, controller, action from path
     * @param path
     * @returns {{module, controller, action}}
     */
    getModuleControllerAction(path) {
&nbsp;
        let paths = [];
        if (path != '/') {
            paths = path.substr(1, path.length).split('/');
        }
&nbsp;
        let module = koahub.config('default_module');
        let controller = koahub.config('default_controller');
        let action = koahub.config('default_action');
&nbsp;
        switch (paths.length) {
            case 0:
&nbsp;
                break;
            case 1:
&nbsp;
                module = paths[0];
                break;
            case 2:
&nbsp;
                module = paths[0];
                controller = paths[1];
                break;
            default:
&nbsp;
                module = paths.shift();
                action = paths.pop();
&nbsp;
                if (koahub.controllers[`/${module}/${paths.join('/')}`]) {
                    controller = paths.join('/');
                    break;
                }
&nbsp;
                paths.push(action);
                if (koahub.controllers[`/${module}/${paths.join('/')}`]) {
                    controller = paths.join('/');
                    action = koahub.config('default_action');
                    break;
                }
&nbsp;
                action = paths.pop();
                controller = paths.join('/');
&nbsp;
        }
&nbsp;
        return {module, controller, action};
    },
&nbsp;
    /**
     * run controller &amp;&amp; action controller
     * @param ctx
     * @param next
     * @param args
     * @returns {Promise.&lt;*&gt;}
     */
    async runController(ctx, next, ...args){
&nbsp;
        const {module, controller, action} = this.getModuleControllerAction(ctx.path);
        const ctrl = koahub.controllers[`/${module}/${controller}`];
        if (ctrl) {
&nbsp;
            const _ctrl = new ctrl(ctx, next);
            const methods = Object.getOwnPropertyNames(ctrl.prototype);
&nbsp;
            // constructor不响应404，中断执行
            if (ctx.status != 404) {
                return;
            }
&nbsp;
            if (lodash.includes(methods, action)) {
&nbsp;
                let result;
                let parseResult = function (data) {
                    if (data) {
                        result = data;
                    }
                };
&nbsp;
                // 控制器初始化
                if (lodash.includes(methods, '_initialize')) {
                    parseResult(await this.getPromiseFunction(_ctrl, '_initialize')(...args));
                }
                // 控制器初始化不响应404，中断执行
                if (ctx.status != 404) {
                    return;
                }
&nbsp;
                // 控制器前置
                if (lodash.includes(methods, '_before')) {
                    parseResult(await this.getPromiseFunction(_ctrl, '_before')(...args));
                }
                // 控制器前置不响应404，中断执行
                if (ctx.status != 404) {
                    return;
                }
&nbsp;
                // 方法前置
                if (lodash.includes(methods, `_before_${action}`)) {
                    parseResult(await this.getPromiseFunction(_ctrl, `_before_${action}`)(...args));
                }
                // 方法前置不响应404，中断执行
                if (ctx.status != 404) {
                    return;
                }
&nbsp;
                parseResult(await this.getPromiseFunction(_ctrl, action)(...args));
&nbsp;
                // 不响应404，中断执行
                if (ctx.status != 404) {
                    return;
                }
&nbsp;
                // 方法后置
                if (lodash.includes(methods, `_after_${action}`)) {
                    parseResult(await this.getPromiseFunction(_ctrl, `_after_${action}`)(...args));
                }
                // 方法后置不响应404，中断执行
                if (ctx.status != 404) {
                    return;
                }
&nbsp;
                // 控制器后置
                if (lodash.includes(methods, '_after')) {
                    parseResult(await this.getPromiseFunction(_ctrl, '_after')(...args));
                }
                // 控制器后置不响应404，中断执行
                if (ctx.status != 404) {
                    return;
                }
&nbsp;
                return result;
            } else {
&nbsp;
                // 控制器空操作
                if (lodash.includes(methods, '_empty')) {
                    return this.runController(Object.assign(ctx, {path: `/${module}/${controller}/_empty`}), next, ...args);
                } else {
                    this.log('Not Found Action');
                    return;
                }
            }
        } else {
&nbsp;
            if (koahub.controllers[`/${module}/empty`]) {
                return this.runController(Object.assign(ctx, {path: `/${module}/empty/${action}`}), next, ...args);
            } else {
                this.log('Not Found Controller');
                return;
            }
        }
    },
&nbsp;
    /**
     * run http filter ctx &amp;&amp; controller methods
     * @param ctx
     * @param next
     * @param args
     * @returns {Promise.&lt;*|Promise.&lt;*&gt;&gt;}
     */
    async runHttp(ctx, next, ...args) {
&nbsp;
        const {module, controller, action} = this.getModuleControllerAction(ctx.path);
        if (!lodash.includes(koahub.modules, module)) {
            this.log('Not Found Module');
            return;
        }
&nbsp;
        // 移除控制器中跟ctx中同名的属性
        for (let name in ctx) {
            if (typeof ctx[name] !== 'function' &amp;&amp; action === name) {
                throw new Error(`Don\'t use the "${action}" action in the controller`);
            }
        }
&nbsp;
        // 过滤控制器默认方法
        const filters = ['constructor', '_initialize', '_before', `_before_${action}`, `_after_${action}`, '_after', '_empty'];
        if (lodash.includes(filters, action)) {
            this.log('Don\'t access the "${action}"');
            return;
        }
&nbsp;
        return await this.runController(ctx, next, ...args);
    },
&nbsp;
    /**
     * Check whether a function is generator.
     *
     * @param  {Function} fn
     * @return {Boolean}
     */
    isGeneratorFunction(fn) {
        return typeof fn === 'function' &amp;&amp;
            fn.constructor &amp;&amp;
            fn.constructor.name === 'GeneratorFunction'
    },
&nbsp;
    /**
     * Parase express middleware to koa middleware
     * @param fn
     * @returns {Function}
     */
    expressMiddlewareToKoaMiddleware(fn) {
        return function (ctx, next) {
            if (fn.length &lt; 3) {
                fn(ctx.req, ctx.res);
                return next();
            } else {
                return new Promise((resolve, reject) =&gt; {
                    fn(ctx.req, ctx.res, err =&gt; {
                        if (err) reject(err)
                        else resolve(next())
                    })
                })
            }
        }
    },
&nbsp;
    /**
     * generator to promise
     * @param instance
     * @param method
     * @returns {Function}
     */
    getPromiseFunction(instance, method) {
        if (this.isGeneratorFunction(instance[method])) {
            return co.wrap(instance[method]).bind(instance);
        }
        return instance[method].bind(instance);
    },
&nbsp;
    /**
     * return es6 module or common module
     * @param file
     * @returns {*}
     */
    requireDefault(file){
&nbsp;
        const lib = require(file);
        if (lib.hasOwnProperty('default') &amp;&amp; Object.keys(lib).length === 1) {
            return lib.default;
        } else {
            return lib;
        }
    },
&nbsp;
    /**
     * console format
     * @param log
     * @param type
     */
    log(log, type = 'log') {
&nbsp;
        if (typeof log === 'string') {
            console[type](`[${moment().format('YYYY-MM-DD HH:mm:ss')}] [Koahub] ${log}`);
        } else {
            const msg = log.stack || log.toString();
            console[type]();
            console[type](`[${moment().format('YYYY-MM-DD HH:mm:ss')}] [Koahub] [Log]`);
            console[type](msg);
            console[type]();
        }
    },
&nbsp;
    /**
     * array customizer
     * @param objValue
     * @param srcValue
     * @returns {string|*|Array.&lt;T&gt;}
     */
    arrayCustomizer(objValue, srcValue) {
        if (lodash.isArray(objValue)) {
            return objValue.concat(srcValue);
        }
    }
}</pre></td></tr>
</table></pre>
<div class='push'></div><!-- for sticky footer -->
</div><!-- /wrapper -->
<div class='footer quiet pad2 space-top1 center small'>
  Code coverage
  generated by <a href="https://istanbul.js.org/" target="_blank">istanbul</a> at Tue Jul 25 2017 12:31:32 GMT+0800 (CST)
</div>
</div>
<script src="../prettify.js"></script>
<script>
window.onload = function () {
        if (typeof prettyPrint === 'function') {
            prettyPrint();
        }
};
</script>
<script src="../sorter.js"></script>
</body>
</html>
